Nozzle



March 22, 1932. w. SCHUCHARDT ET AL 1,850,570

NOZZLE Filed May 9. 1928 mm M w w W T fl J 4 fir A z 5 w W 3. I 9 Z??? 95 m 6 2 v Patented Mar. 22, 1932 urnTEo stares PATENT OFFICE WILLIAMSCHUCHARDT AND JAMES L. HEROLD, OF ST. LOUIS, MISSOURI, ASSIGNORS TOBARRY-WEHMILLER MACHINERY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORA-TION OF MISSOURI NOZZLE Application filed May 9, 1928.

This invention relates to improvements in nozzles, one of the objectsbeing to produce a simple rotary nozzle driven by the fluid dischargedtherefrom.

A further object is to provide a small and compact device of this kindadapted for use in washing the inner faces of bottles.

Another object is to provide a simple and efficient bottle washingdevice including a wiper carried by the rotary nozzle, said wipercoacting with said cleansing fluid to thoroughly clean the bottle.

Another object is to provide a thrust bearing between said rotary nozzleand a support therefor, and to provide means for reducing the thrust onsaid bearing, thereby permitting the nozzle to rotate freely and rapidlyin response to the discharge of fluid.

With the foregoing and other objects in view, the invention comprisesthe novel construction, combination and arrangement of parts hereinaftermore specifically described and illustrated in the accompanyingdrawings, wherein is shown the preferred embodiment of the invention.However, it is to be understood that the invention comprehends changesvariations and modifications which come within the scope of the claimshereunto appended.

Briefly described, one form of our improved nozzle comprises a rotarymember ineluding a discharge head having a. pressure chamber therein andtangentlally disposed passageways leading from said chamber to.

the exterior of said head. An injector tube extends from said head andis loosely mounted for rotation in a housing on a fluid conductor thatsupports the device. A thrust bearing may be disposed between thehousing and the rotary member.

In order to reduce the thrust on said bearing, an injector nozzledischarges the fluid from said conductor to the injector tube, so as tocreate a suction in a suctlon chamber where the thrust bearing islocated.

1 as at 3.

Serial No. 276,237.

When a fluid flows through the device, a suction is created in thesuction chamber and the outside atmospheric pressure will tend to forcethe rotary member inwardly against the pressure of the fluid passingthrough the nozzle, thus greatly reducing the thrust against saidbearing.

Fig. 1 is an elevation of a nozzle and supporting parts embodying ourinvention, showing how the device may be used in wash- 1 ing bottles.

Fig. 2 is a top plan view of a nozzle embodylng our invention.

Fig. 3 is a longitudinal sectional view along the line 3-3 of Fig. 1.

Fig. 4 is a fragmentary sectional view along the line $4: of Fig. 3.

Fig. 5 is a sectional view along the line 5-5 of Fig. 3.

To illustrate one form of the invention, we have shown a rotary devicecomprising a conical discharge head 1, and an injector tube 2 extendingfrom and threaded to the head The injector tube terminates at its upperend in a pressure chamber 4. provided in the discharge head 1.

Diametrically opposed passageways 5 eX- tend upwardly and tangentiallyfrom said pressure chamber 4; and open onto the conical side faces 6 ofsaid head 1.

The rotary device A is freely mounted on a supporting member B includinga fluid conductor 7 terminating in a'housing 8 and a sleeve 9 extendingupwardly from and threaded to the housing 8 as at 10. Said housing 8 andsleeve 9 surround the injector tube 2 to guide the same in its rotation,and a thrust bearing including an anti-friction device 11 is mountedbetween the sleeve 9 and the injector tube 2.

The anti-friction device 11 may be in the form of a ring ofanti-friction metal as shown in Fig. 3. This ring 11 contacts with aradially disposed annular seat 12 formed on a laterally extending flange13 on the in- 90 ner end of the injector tube 2. The sleeve 9 has itsinner end formed with a like annular seat 14 complementary to the seat12, and the ring 11 contacts at its upper face with said seat 14. (Fig.3.)

An injector nozzle 15 extends from the fluid conductor 7 and projectsinto and is spaced from the walls of a recess 18 in the inner end of theinjector tube 2 to provide an annular passageway 19 surrounding saidnozzle 15. j

The injector nozzle 15 is formed on a noz zle body 20 frictionallysecured in the housing 8 and spaced from the flange 13 to provide asuction chamber 21 therebetween. As shown in Fig. 3, said chamber 21extends upwardly around the flange 13 and also around the outer face ofthe ring 11. This ring closes a portion of the suction chamber 21. Thepassageway 19 connects said suction chamber 21 with an angular annularpassageway 22 leading into said injector tube 2 at the discharge end ofsaid injectornozzle 15.

Thus we provide an aspirator for creating a suction in said suctionchamber 21 on the passage of a fluid through the injector nozzle 15 intothe injector tube 2. This suction has the primary effect of reducing thethrust, due to the passage of the fluid through the rotary nozzle, onthe anti-friction bearing 11.

This tube 2 may be freely mounted in the sleeve 9 soas to provideapassageway 32 therebetween for the admissionof atmospheric pressurethereto, said pressure acting against the upper side of the flange 13 tooppose the thrust against the bearing 11.

The aspirating effect described will tend to remove any fluid that mayenter said suction chamber, thereby preventing leakage of fluid at thethrust bearing 11, and also reducing or eliminating the friction whichwould otherwise result from fluid pressure at the thrust bearing.

y We willnow refer to the simple wiping device shown in the drawings; Atransverse slot 26 is provided in the end of the conical head 1. Thisslot is slightly flared at the top, in order to facilitate the insertioninto the slot of a strip of flexible material 28. This strip may be madeof elastic rubber, and it is inserted in the slot by first stretching,or elongating the strip so as to reduce its thickness, the piece beingheld aproximately horizontal, as suggested in Fig. 1, and slipped intothe slot 26.

On releasing the strip of rubber 28, it will expand transversely andfrictionally'engage the side walls of the slot 26, and it is thusfrictionally, or tensionally, held in the slot. Whensecured in thismanner, with the upper margin of the rubber strip entirely above theslot 26, the portion in saidslot will be retained under more or lesstension, while the other portions are free of tension, and the strip ofrubber will then diverge from the slot to form the wings 29 which lie aproximately at right angles to the conical aces of the head 1.

A hole 30 is provided through the head 1 for the insertion of a tool(not shown), and diametrically disposed slots 31 are formed in theflange 13 for the insertion of a screw driver or like tool, whereby thehead 1 may be held and unscrewed from the injector tube 2.

The apparatus may be supported on a supply pipe 33 having threadedconnection as at 34: with the fluid conductor 7 and a wrenchengagingelement 35 is provided to facilitate the removal of the devicefrom said pipe 33.

The interior of said pipe 33 communicates through with the interior ofthe pipe 7, and the fluid may be supplied through said pipe 33.

In use, the fluid passes through the injector tube 2 into the pressurechamber 4 and is discharged through the tangential passage ways 5. Thenozzle is rotated partly by the reaction of the confined fluid inflowing through said tangentially disposed passageways 5, and partlyfrom the thrust caused by the impingement of the'tangential streams onan adjacent surface, thus thoroughly distributing the fluid aboutcontiguous areas.

The preferred use of our device is in connection with washing bottles,as suggested in Fig.1. In such use the fluid is caused to impinge on theinner face of a bottle 25. As the nozzle revolves, the fluid is directedcircumferentially thereby, and also, by means not shown, the pipe 33 maybe raised and lowered so as to cause the nozzle to axially traverse theinterior of the bottle. Thus the fluid may be distributed over theentire inside face of the bottle.

The flexible wiper 28 coacts with the fluid by loosening and dislodgingany matter that may be on said walls 24, and the fluid may quickly washsuch matter out of the'bottle, said bottle being disposed with its openend downwardly, as suggested'in Fig. 1, so that the fluid will readilydrain from the bottle.

The wiper 28, being flexible and foldable, permits the ready insertionof the device through the relatively narrow neck as usually found inbottles. Partly from its own elasticity and partly from the centrifugaleffect, the terminal portions 29 are extended as suggested in Fig. 1 tocontact'with the wall 24 at all points.

scrubbed in a very simple and inexpensive manner.

l/Ve claim:

The cleansing action of the fluid w forcibly discharged from therotating nozzle Thus the interior wall of the bottle is thoroughlywashed and 1. In a device of the kind described, a noz driven by thefluid discharged therethrough, said rotary device having a chamber andtangentially disposed passageways leading from said chamber to theexterior of said rotary device, a fluid conductor supporting said rotarydevice and communicating with said chamber, a thrust bearing disposedbetween said conductor and said rotary device, and means for reducingthe thrust on said bearing, said means including a suction chamberdisposed about said bearing, said rotary device forming part of thewalls of said suction chamber, and a suction device communicating withsaid chamber through which suction device the fluid is discharged tocreate a partial vacuum in said suction chamber, there being apassageway for the admission of atmospheric pressure to said thrustbearmg.

2. In a device of the kind described, a nozzle including a rotary deviceadapted to be driven by the fluid discharged therethrough, said rotarydevice having a chamber and tangentially disposed passageways leadingfrom said chamber to the exterior of said rotary device, a fluidconductor supporting said rotary device and communicating with saidchamber, a thrust bearing disposed between said conductor and saidrotary device, and means for reducing the thrust on said bearing, saidmeans including a nozzle through which the fluid is discharged from saidconductor to said rotary device, and a suction chamber, said rotarydevice forming part of the walls of said chamber, said suction chamberbeing in communication with the outer face of the last mentioned nozzle,and there being a passageway for the admission of atmospheric pressureto said bearing.

3. In a device of the kind described, a nozzle including a rotary deviceadapted to be driven by the fluid discharged therethrough, said rotarydevice having a chamber and tangentially disposed passageways leadingfrom said chamber to the exterior of said rotary device, a fluidconductor supporting said rotary device and communicating with saidchamber, a thrust bearing disposed between said conductor and saidrotary device, and means for reducing the thrust on said bearing, saidmeans including an aspirating nozzle extending from said conductor andprojecting into said rotary device, and a suction chamber surroundingsaid aspirating nozzle, said rotary device forming part of the walls ofsaid chamber and the thrust bearing being arranged to close a portion ofsaid suction chamber.

4. A bottle washing device provided with a rotary nozzle through whichthe cleansing fluid is discharged, and a flexible wiper carried by saidrotary nozzle, said nozzle having a transverse slot, and the flexiblewiper being tensionally secured in said slot.

5. A bottle Washing device provided with a nozzle having means forrotating it by the fluid discharged therethrough, and a flexible wipercarried by said rotary nozzle, said nozzle being provided with a conicaltip having a transverse slot, and said wiper being a strip of rubbertensionally secured in said slot and diverging from said conical tip. Intestimony that we claim the foregoing we hereunto aflix our signatures.

WM. SCHUCHARDT'.

JAS. HEROLD.

